 /*******************************************************************************
  * Copyright (c) 2004, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.intro;

 /**
  * Registry for introduction elements.
  *
  * @since 3.0
  */
 public interface IIntroRegistry {

     /**
      * Return the number of introduction extensions known by this registry.
      *
      * @return the number of introduction extensions known by this registry
      */
     int getIntroCount();

     /**
      * Return the introduction extensions known by this registry.
      *
      * @return the introduction extensions known by this registry
      */
     IIntroDescriptor[] getIntros();

     /**
      * Return the introduction extension that is bound to the given product.
      *
      * @param productId the product identifier
      * @return the introduction extension that is bound to the given product,
      * or <code>null</code> if there is no such binding
      */
     IIntroDescriptor getIntroForProduct(String productId);

     /**
      * Find an intro descriptor with the given identifier.
      *
      * @param id the id
      * @return the intro descriptor, or <code>null</code>
      */
     IIntroDescriptor getIntro(String id);
 }

